to ensure the generator isn't constantly running at its limit. Typical Needs Recommended Size Recreation (Camping, tailgating, small tools) 1,000 – 3,000 Watts Home Essentials (Fridge, lights, sump pump, TV) 5,000 – 7,500 Watts Large Home Backup (Central AC, electric water heater) 10,000+ Watts 2. Choose Your Generator Type
: The extra "boost" required for motor-driven appliances (like fridges or AC units) to start up, which can be 2 to 3 times the running wattage. How to calculate total size: List all devices you need to run simultaneously. Add up all their Running Watts .
: If using gasoline, add a fuel stabilizer if you plan to store the fuel or the generator for more than a few months to prevent engine damage. Generator Buying Guide - Consumer Reports buy portable generator
: These can run on both gasoline and propane. Propane is easier to store long-term (it doesn't degrade like gas) and burns cleaner, though it produces slightly less power. 3. Key Features to Look For
: Best for camping and sensitive electronics (laptops, phones). They are significantly quieter (50-60 dB), more fuel-efficient, and produce "clean" power, but they are more expensive and offer lower total output. to ensure the generator isn't constantly running at
Generators are sold by their power output in watts. You must identify two types of wattage for every device you plan to power:
: This includes garages, sheds, or basements. Deadly carbon monoxide can build up quickly. How to calculate total size: List all devices
: Look for at least 10 hours of run time at 50% load to get through a full night without refueling. 4. Essential Safety Rules